I am using Cypress Fx3S microcontroller in my application. I am using FatFS commands for Read and Write operations from SD Card. I am successfully able to read .txt file. But I am unable to read the .pcm file. Kindly, help me in finding a way to read .pcm file as it is inevitable in my application.

What problem are you exactly facing when handling the PCM files? Which APIs return error? Did you try our FatFs example project? If the pcm file is too large, please make sure that the reads, buffering and transferring to PC via USB are done in a sequential and well planned manner.